Hi all,
this is half request half question on this note: N#203604
I noticed that there are at least three different serial number formats. One pictured on the picture on the page showing the watermark, and the two in the picture below (both with the same watermark). I've seen notes where such differences were captured as varieties with different year lines. Would this apply here, too?

Best regards,
53th0s
Edit: looking at the back note museum, I could find two of the variants, but still not the one starting with ‘No'.
http://www.banknote.ws/COLLECTION/countries/EUR/GER/GER0110.htm